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in a certain determined way before the lock can be operated. -- Dial plate, the plane or disk of a dial or timepiece on which lines and figures for indicating the time are placed.

To exhibit as a half disk. See Dichotomy,

That phase of the moon in which it appears bisected, or shows only half its disk, as at the quadratures.

ipse; as, an eclipse of eight digits is one which hides two thirds of the diameter of the disk.

ar structure either in plants or animals; as, a blood disc, a germinal disc, etc. Same as Disk.

Pertaining to, or resembling, a disk; as, discal cells.

Bearing disks.

A genus of Branchiopoda, having a disklike shell, attached by one valve, which is perforated by the peduncle.

Applied to a form of egg cleavage seen in osseous fishes, which occurs only in a small disk that separates from the rest of the egg.

A division of amphibians having suctorial disks on the toes, as the tree frogs.

Having sucking disks on the toes, as the tree frogs.

Having the form of a disk, as those univalve shells which have the whorls in one plane, so as to form a disk, as the pearly nautilus. Discoid flower (Bot.), a compound flower, consisting of tubular florets only, as a tansy, lacking the rays which are seen in the daisy and sunflower.

Disk-shaped; discoid.

A division of acalephs or jellyfishes, including most of the large disklike species. -- Dis*coph"o*rous, a.

Disklike; discoid.

A disk. See Disk.

One of the dark particles forming the doubly refracting disks of muscle fibers.

upon a ball of lime; or a stream of oxygen gas through a flame of alcohol upon a ball or disk of lime; -- called also oxycalcium light, or lime light.

when the moon is near the sun (either before or after new moon), that part of the moon's disk unillumined by direct sunlight, or "the old moon in the arms of the new."

A disk or wheel so arranged upon a shaft that the center of the wheel and that of the shaft do not coincide. It is used for operating valves in steam engines, and for other purposes. The motion derived is precisely that of a crank having the same throw. Back eccentric, the eccentric that reverses or backs the valve gea…